CN211530122U - Connected square alkaline secondary battery pack with novel internal series structure - Google Patents

Abstract

The utility model discloses a square alkaline secondary battery of disjunctor with novel interior series structure, battery case adopts the disjunctor square structure who keeps apart into a plurality of monomer cavities, all is equipped with polar plate group in every monomer cavity, this polar plate group adopts the combination of lamination formula structure in proper order and is equipped with the diaphragm between positive plate and negative pole piece by the positive plate that is equipped with utmost point ear and the negative pole piece that is equipped with utmost point ear, adopt behind the conductive connecting strip series connection according to the electrode direction between the polar plate group in the adjacent monomer cavity to draw forth the anodal wiring end and the negative pole wiring end of polar plate group on the battery end cover. The utility model discloses changed the assembly structure of basicity secondary battery group, reduced spare part, reduced series resistance, eliminated the exposed and oxidation corrosion of battery external connection part and weeping gas leakage phenomenon, reduced the volume and the weight of combination group battery, practiced thrift material cost and cost of labor.

Description

Connected square alkaline secondary battery pack with novel internal series structure

Technical Field

The utility model belongs to the technical field of alkaline secondary battery, concretely relates to square alkaline secondary battery group of disjunctor with novel interior series structure.

Background

In the alkaline secondary battery system, a cylindrical battery structure having a small capacity (10 Ah or less) is used in many cases, and since the cell voltage of the alkaline battery is low, a high voltage can be obtained by welding nickel plates or steel plates in series in order and then forming a group. If the large capacity (more than 100 Ah) is used for series-parallel connection of small cylindrical batteries, the space utilization rate is not high, and the problem of consistency of the batteries is also involved, so that the large capacity batteries are mainly of a single square structure at present, and the upper part of each single battery is provided with a thicker electrode binding post; when used in groups, the groups may be connected in series by cables or by metal sheets of larger cross-section. So far, many applications with medium and small capacity (10-80 Ah) are combined into a single body according to the voltage of 6V or 12V, which is convenient for carrying and secondary combination and limits the volume of the battery pack. When the single square battery structures are combined for use, the problems of the weight of the whole battery pack, the thickness size between shells, the corrosion and oxidation of the external electrode connecting part, the short circuit prevention of the exposed part and the like are involved. The rectangular batteries have been grouped in this manner for over 100 years since the invention of the alkaline secondary batteries, and if the batteries with medium and small capacities are also grouped in this structure, relatively large waste is generated in terms of material cost and labor cost of battery manufacturing enterprises. Taking a square alkaline secondary battery pack of 12V as an example, the battery pack needs 10 single battery tanks, 9 tank walls are added with thickness and corresponding materials, 20 special-shaped non-standard part-shaped poles are arranged, 9 external metal connecting plates are arranged, and a battery box with certain strength or a bundling strip is used for reinforcing and protecting the grouped batteries; namely, 18 poles, 36 nuts, a plurality of gaskets, sealing rings, a battery box and the like are used in multiple ways. Therefore, if the battery pack with medium and small capacity is produced and assembled by adopting an inherent mode, the process is more in working procedures, complicated to operate and time-consuming and material-consuming.

Disclosure of Invention

The utility model provides a technical problem provide a square alkaline secondary battery of disjunctor with novel interior series structure, this battery case adopts the disjunctor square structure who keeps apart into a plurality of monomer cavities, the electrode series connection between the monomer polar plate group changes into by original external connection and strides the wall or wear the internal connection mode of wall with the electrically conductive connecting strip of the zigzag of dog-ear 90 degrees, be applicable to plastic casing's glue encapsulation and hot melt encapsulation, stride the wall connection and adopt spot welding technology, it adopts bolt-up's mode to wear the wall connection.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme, a square alkaline secondary battery of disjunctor with novel interior series structure, its characterized in that: the battery shell adopts a connected square structure separated into a plurality of monomer cavities, each monomer cavity is internally provided with an electrode plate group, the electrode plate groups adopt a sequential lamination type structure combination by a positive plate provided with a tab and a negative plate provided with the tab, a diaphragm is arranged between the positive plate and the negative plate, and a positive terminal and a negative terminal of the electrode plate groups are led out on a battery end cover after the electrode plates in adjacent monomer cavities are connected in series by adopting a conductive connecting strip according to the electrode direction.

And further limiting, wherein a battery end cover which is hermetically buckled with the battery shell is arranged at the upper part of the battery shell, a screw-in type valve control exhaust valve is arranged on the battery end cover corresponding to the monomer cavity, and a screw-in port of the screw-in type valve control exhaust valve on the battery end cover is simultaneously a liquid adding port of electrolyte.

Further limit, the conductive connecting strip is a Z-shaped structure with a folding angle of 90 degrees, and the conductive connecting strip is divided into a cross-wall type conductive connecting strip and a through-wall type conductive connecting strip.

Further inject, the round hole has been seted up to the one end of wall-spanning type conductive connecting strip for with the bolt fixed connection of through connection positive plate utmost point ear or negative pole piece utmost point ear, the wall-spanning type conductive connecting strip's other end edge part punching press has a plurality of welding bumps, is used for crossing the wall with the wall-spanning type conductive connecting strip of adjacent polar plate group syntropy electrode and adopts resistance bump welding when connecting.

Further inject, the round hole has all been seted up at the both ends of wall-penetrating type conductive connecting strip, and one end round hole is used for and the bolt fixed connection of through connection positive plate utmost point ear or negative pole piece utmost point ear, and the other end round hole is used for penetrating the bolt and install seal ring additional fixedly through the hole of punching on the battery cell wall with the wall-penetrating type conductive connecting strip of adjacent polar plate group syntropy electrode.

Further, the material of the conductive connecting strip is one of a nickel strip, a copper strip or a nickel-plated steel strip.

Compared with the prior art, the utility model following beneficial effect has: the utility model discloses changed the assembly structure of basicity secondary battery group, reduced spare part, reduced series resistance, eliminated the exposed and oxidation corrosion of battery external connection part and weeping gas leakage phenomenon, reduced the volume and the weight of combination group battery, practiced thrift material cost and cost of labor.

Drawings

Fig. 1 is a schematic view of the internal assembly structure of the battery case according to the present invention;

fig. 2 is a schematic structural diagram of a battery end cap according to the present invention;

fig. 3 is a schematic structural view of the through-wall type conductive connecting strip of the present invention;

FIG. 4 is a side view of FIG. 3;

fig. 5 is a diagram of the usage status of the through-wall type conductive connecting strip of the present invention;

fig. 6 is a schematic structural view of the mid-span wall type conductive connecting strip of the present invention;

FIG. 7 is a side view of FIG. 6;

fig. 8 is a diagram of the usage status of the mid-span wall type conductive connecting strip of the present invention.

In the figure: 1-battery shell, 2-battery end cover, 3-positive terminal, 4-negative terminal, 5-screw-in type valve control exhaust valve, 6-positive plate, 7-negative plate, 8-diaphragm and 9-conductive connecting strip.

Detailed Description

The technical scheme of the utility model is described in detail by combining the attached drawings, a conjoined square alkaline secondary battery pack with a novel internal series structure comprises a battery shell 1 which is isolated into a conjoined square structure of a plurality of monomer cavities, the upper part of the battery shell 1 is provided with a battery end cover 2 which is sealed and buckled with the battery shell, one side of the battery end cover corresponding to the first monomer cavity is provided with a positive terminal 3, one side of the battery end cover corresponding to the last monomer cavity is provided with a negative terminal 4, each battery end cover corresponding to the monomer cavity is provided with a screwed-in type valve control exhaust valve 5, a screw-in port of the screwed-in type valve control exhaust valve 5 on the battery end cover 2 is simultaneously a liquid filling port of electrolyte, a polar plate group is arranged in each monomer cavity, the polar plate group is formed by adopting a laminated structure combination in sequence by a positive plate 6 provided with polar lugs and a negative plate 7 provided with polar lugs, and a diaphragm 8 is arranged between, holes are formed in the positive plate 6 lug and the negative plate 7 lug, the positive plate 6 lug is arranged at one end, and the negative plate 7 lug is arranged at the other end in the lamination process; the tab of the positive plate 6 is fixed with one end of the conductive connecting strip 9 by a bolt, and the tab of the negative plate 7 is fixed with one end of the other conductive connecting strip 9 in the opposite direction by a bolt; the conductive connecting strip 9 is of a Z-shaped structure with a 90-degree folding angle, and the conductive connecting strip 9 is divided into a cross-wall type conductive connecting strip and a through-wall type conductive connecting strip; one end of the wall-crossing type conductive connecting strip is provided with a round hole for fixedly connecting with a bolt for penetrating and connecting a positive plate 6 lug or a negative plate 7 lug, the edge part of the other end of the wall-crossing type conductive connecting strip is punched with a plurality of welding salient points for adopting resistance salient point welding when the wall-crossing type conductive connecting strip and an adjacent plate group equidirectional electrode are connected in a wall-crossing manner; round holes are formed in two ends of the wall-penetrating type conductive connecting strip, one end of the wall-penetrating type conductive connecting strip is fixedly connected with a bolt for penetrating and connecting a positive plate 6 lug or a negative plate 7 lug, and the other end of the wall-penetrating type conductive connecting strip is used for penetrating the bolt through a hole formed in the wall of the battery cell and fixing the bolt by additionally arranging a sealing washer with a wall-penetrating type conductive connecting strip of an adjacent electrode plate group homodromous electrode.

The utility model discloses an in the assembling process, fill in battery case's monomer intracavity according to the range of the polarity of difference with polar plate group in proper order, use and stride the wall connected mode: the corresponding positive and negative pole wall-spanning type conductive connecting bars are welded at the upper end of the battery cell wall by applying heavy current by a resistance welding machine; the method adopts a through-wall connection mode: the corresponding positive and negative through-wall type conductive connecting strips are fastened by bolts with sealing gaskets through holes formed on the cell wall.

The foregoing shows and describes the general principles of the present invention, with its principal features and advantages, and further, various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. The utility model provides a square alkaline secondary battery of disjunctor with novel interior series structure which characterized in that: the battery shell adopts a connected square structure separated into a plurality of monomer cavities, each monomer cavity is internally provided with an electrode plate group, the electrode plate groups adopt a sequential lamination type structure combination by a positive plate provided with a tab and a negative plate provided with the tab, a diaphragm is arranged between the positive plate and the negative plate, and a positive terminal and a negative terminal of the electrode plate groups are led out on a battery end cover after the electrode plates in adjacent monomer cavities are connected in series by adopting a conductive connecting strip according to the electrode direction.

2. The connected prismatic alkaline secondary battery pack having a novel internal series structure according to claim 1, characterized in that: the upper part of the battery shell is provided with a battery end cover which is hermetically buckled with the battery shell, the battery end cover corresponding to the monomer cavity is provided with a screw-in type valve control exhaust valve, and a screw-in port of the screw-in type valve control exhaust valve on the battery end cover is a liquid adding port of electrolyte.

3. The connected prismatic alkaline secondary battery pack having a novel internal series structure according to claim 1, characterized in that: the conductive connecting strip is of a Z-shaped structure with a 90-degree folding angle and is divided into a cross-wall type conductive connecting strip and a through-wall type conductive connecting strip.

4. The connected prismatic alkaline secondary battery pack having a novel internal series structure according to claim 3, characterized in that: and a round hole is formed in one end of the wall-crossing type conductive connecting strip and is used for being fixedly connected with a bolt for penetrating and connecting a positive plate lug or a negative plate lug, and a plurality of welding salient points are punched at the edge part of the other end of the wall-crossing type conductive connecting strip and are used for adopting resistance salient point welding when the wall-crossing type conductive connecting strip of the same-direction electrode of the adjacent plate group is connected with the wall in a crossing manner.

5. The connected prismatic alkaline secondary battery pack having a novel internal series structure according to claim 3, characterized in that: round holes are formed in two ends of the wall penetrating type conductive connecting strip, one end of each round hole is used for being fixedly connected with a bolt of a positive plate electrode lug or a negative plate electrode lug in a penetrating connection mode, and the other end of each round hole is used for being fixedly connected with the wall penetrating type conductive connecting strip of an adjacent electrode plate group in the same direction through a hole formed in the wall of the battery cell to penetrate the bolt and additionally install a sealing washer.

6. The connected prismatic alkaline secondary battery pack having a novel internal series structure according to claim 1 or 3, characterized in that: the conductive connecting strip is made of one of a nickel strip, a copper strip or a nickel-plated steel strip.

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